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gemini-critic

gemini-critic is a skill for Claude Code, Codex from black940514/gpt-cross-validator. It costs 27 tokens per session (724 once invoked), scanned A, original, no licence file.

A planning review skill that uses Gemini Pro for cross-checking, with Claude as a fallback. Plan review means checking a proposed approach for problems before implementation.

In plain words
What is it for?
Reviewing development plans and cross-checking their reasoning before work begins.
Why use it?
It adds an independent review of a plan and provides a fallback reviewer if needed.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 1repo 9mo ago A scan 27 tokens no licence

Good fit Reviewing development plans and cross-checking their reasoning before work begins.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/black940514/gpt-cross-validator/gemini-critic
View source ↗ black940514/gpt-cross-validator
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add black940514/gpt-cross-validator --skill gemini-critic
Clone the repo
git clone --depth 1 https://github.com/black940514/gpt-cross-validator

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for gemini-critic

README.md
[![agentmods](https://agentmods.dev/badge/skills/black940514/gpt-cross-validator/gemini-critic/github.svg)](https://agentmods.dev/skills/black940514/gpt-cross-validator/gemini-critic)
Your own site
<a href="https://agentmods.dev/skills/black940514/gpt-cross-validator/gemini-critic"><img src="https://agentmods.dev/badge/skills/black940514/gpt-cross-validator/gemini-critic/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for gemini-critic

Your own site · 80×15
<a href="https://agentmods.dev/skills/black940514/gpt-cross-validator/gemini-critic"><img src="https://agentmods.dev/badge/skills/black940514/gpt-cross-validator/gemini-critic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 724 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00027 $0.00724
Opus 5.5 $0.00011 $0.00290
Sonnet 5.5 $0.00005 $0.00145
Haiku 4.5 $0.00003 $0.00072

Measured 2mo ago against content hash c6a51aebb4d9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gemini-critic scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/gemini-critic/SKILL.md · 118 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 118 lines · 27 tokens per session scan A c6a51aebb4d9

Subscribe to this mod's changes

gemini-critic is a skill published in the GitHub repository black940514/gpt-cross-validator (1 stars, last pushed 9mo ago), with no licence file. It adds 27 tokens to every session and 724 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Planning
Related

gemini-critic compared with skills from other repositories

gemini-critic next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
gemini-criticblack940514/gpt-cross-validatorSkill19mo agononeA27Claude Code, Codex
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill99ktodayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79ktodayMITA200Claude Code, Codex
systematic-debuggingobra/superpowersSkill314k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
next-partial-prefetching-adoptionvercel/next.jsSkill143ktodayMITA103Claude Code